PHP SPL标准库的用法(遍历目录,查找固定条件的文件)
[代码] [PHP]代码
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<?php |
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class RecursiveFileFilterIterator extends FilterIterator { |
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// 满足条件的扩展名 |
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protected $ext = array('jpg','gif'); |
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/** |
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* 提供 $path 并生成对应的目录迭代器 |
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*/ |
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public function __construct($path) { |
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parent::__construct(new RecursiveIteratorIterator(new RecursiveDirectoryIterator($path))); |
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} |
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/** |
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* 检查文件扩展名是否满足条件 |
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*/ |
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public function accept() { |
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$item = $this->getInnerIterator(); |
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if ($item->isFile() && |
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in_array(pathinfo($item->getFilename(), PATHINFO_EXTENSION), $this->ext)) { |
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return TRUE; |
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} |
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} |
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} |
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// 实例化 |
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foreach (new RecursiveFileFilterIterator('D:/history') as $item) { |
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echo $item . PHP_EOL; |
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} |
